/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:38:42,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:38:42,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:38:42,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:38:42,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:38:42,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:38:42,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:38:42,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:38:42,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:38:42,634 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:38:42,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:38:42,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:38:42,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:38:42,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:38:42,635 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:38:42,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:38:42,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:38:42,635 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:38:42,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:38:42,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:38:42,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:38:42,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:38:42,637 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:38:42,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:38:42,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:38:42,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:38:42,857 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:38:42,858 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:38:42,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i [2025-04-13 19:38:44,182 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e361a53/e015cb6abe7648d79739531e8019726c/FLAG895ff102f [2025-04-13 19:38:44,635 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:38:44,636 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i [2025-04-13 19:38:44,679 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e361a53/e015cb6abe7648d79739531e8019726c/FLAG895ff102f [2025-04-13 19:38:45,385 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e361a53/e015cb6abe7648d79739531e8019726c [2025-04-13 19:38:45,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:38:45,388 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:38:45,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:38:45,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:38:45,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:38:45,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:38:45" (1/1) ... [2025-04-13 19:38:45,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752ccec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:45, skipping insertion in model container [2025-04-13 19:38:45,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:38:45" (1/1) ... [2025-04-13 19:38:45,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:38:45,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i[5520,5533] [2025-04-13 19:38:49,355 WARN L1730 CHandler]: Possible shadowing of function iminor [2025-04-13 19:38:49,355 WARN L1730 CHandler]: Possible shadowing of function iminor [2025-04-13 19:38:49,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:38:49,427 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:38:49,448 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i[5520,5533] [2025-04-13 19:38:49,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-04-13 19:38:49,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-04-13 19:38:49,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-04-13 19:38:49,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-04-13 19:38:49,634 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] [2025-04-13 19:38:49,664 WARN L1730 CHandler]: Possible shadowing of function iminor [2025-04-13 19:38:49,664 WARN L1730 CHandler]: Possible shadowing of function iminor [2025-04-13 19:38:49,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:38:49,981 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:38:49,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49 WrapperNode [2025-04-13 19:38:49,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:38:49,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:38:49,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:38:49,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:38:49,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,109 INFO L138 Inliner]: procedures = 1392, calls = 1531, calls flagged for inlining = 397, calls inlined = 54, statements flattened = 740 [2025-04-13 19:38:50,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:38:50,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:38:50,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:38:50,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:38:50,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,156 INFO L175 MemorySlicer]: Split 69 memory accesses to 10 slices as follows [2, 1, 2, 9, 10, 10, 25, 4, 4, 2]. 36 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [2, 1, 2, 4, 4, 8, 25, 4, 0, 0]. The 6 writes are split as follows [0, 0, 0, 2, 0, 1, 0, 0, 1, 2]. [2025-04-13 19:38:50,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,184 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:38:50,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:38:50,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:38:50,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:38:50,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (1/1) ... [2025-04-13 19:38:50,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:38:50,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:38:50,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:38:50,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:38:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:38:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 19:38:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2025-04-13 19:38:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2025-04-13 19:38:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:38:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_get [2025-04-13 19:38:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_get [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-04-13 19:38:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-04-13 19:38:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-04-13 19:38:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:38:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-04-13 19:38:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2025-04-13 19:38:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-04-13 19:38:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-04-13 19:38:50,280 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:38:50,610 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:38:50,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:38:51,281 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:38:51,282 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:38:51,282 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:38:52,842 INFO L313 CfgBuilder]: Removed 12 assume(true) statements. [2025-04-13 19:38:52,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:38:52 BoogieIcfgContainer [2025-04-13 19:38:52,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:38:52,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:38:52,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:38:52,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:38:52,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:38:45" (1/3) ... [2025-04-13 19:38:52,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:38:52, skipping insertion in model container [2025-04-13 19:38:52,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:38:49" (2/3) ... [2025-04-13 19:38:52,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:38:52, skipping insertion in model container [2025-04-13 19:38:52,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:38:52" (3/3) ... [2025-04-13 19:38:52,851 INFO L128 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i [2025-04-13 19:38:52,863 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:38:52,866 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i that has 3 procedures, 45 locations, 74 edges, 1 initial locations, 15 loop locations, and 3 error locations. [2025-04-13 19:38:52,866 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:38:52,958 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 19:38:52,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 76 transitions, 166 flow [2025-04-13 19:38:53,036 INFO L116 PetriNetUnfolderBase]: 32/74 cut-off events. [2025-04-13 19:38:53,039 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:38:53,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 32/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 135 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 7 conditions per place. [2025-04-13 19:38:53,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 76 transitions, 166 flow [2025-04-13 19:38:53,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 72 transitions, 153 flow [2025-04-13 19:38:53,052 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:38:53,063 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2064b2de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:38:53,063 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 19:38:53,080 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:38:53,081 INFO L116 PetriNetUnfolderBase]: 5/9 cut-off events. [2025-04-13 19:38:53,081 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:38:53,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:38:53,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-04-13 19:38:53,082 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:38:53,086 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:38:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2093356, now seen corresponding path program 1 times [2025-04-13 19:38:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:38:53,091 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039351906] [2025-04-13 19:38:53,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:38:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:38:53,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-13 19:38:53,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-13 19:38:53,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:38:53,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:53,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:38:53,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039351906] [2025-04-13 19:38:53,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039351906] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:38:53,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:38:53,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:38:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365812377] [2025-04-13 19:38:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:38:53,913 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:38:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:38:53,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:38:53,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:38:53,933 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 76 [2025-04-13 19:38:53,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 72 transitions, 153 flow. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:53,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:38:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 76 [2025-04-13 19:38:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:38:54,195 INFO L116 PetriNetUnfolderBase]: 329/528 cut-off events. [2025-04-13 19:38:54,195 INFO L117 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-04-13 19:38:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 528 events. 329/528 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1616 event pairs, 208 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 930. Up to 519 conditions per place. [2025-04-13 19:38:54,200 INFO L140 encePairwiseOnDemand]: 62/76 looper letters, 56 selfloop transitions, 0 changer transitions 1/58 dead transitions. [2025-04-13 19:38:54,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 239 flow [2025-04-13 19:38:54,204 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:38:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:38:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2025-04-13 19:38:54,217 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-04-13 19:38:54,218 INFO L175 Difference]: Start difference. First operand has 47 places, 72 transitions, 153 flow. Second operand 2 states and 77 transitions. [2025-04-13 19:38:54,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 239 flow [2025-04-13 19:38:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:38:54,225 INFO L231 Difference]: Finished difference. Result has 43 places, 57 transitions, 118 flow [2025-04-13 19:38:54,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=57} [2025-04-13 19:38:54,230 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2025-04-13 19:38:54,230 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 57 transitions, 118 flow [2025-04-13 19:38:54,231 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:54,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:38:54,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:38:54,231 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:38:54,231 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:38:54,232 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:38:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash 597643686, now seen corresponding path program 1 times [2025-04-13 19:38:54,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:38:54,233 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899717520] [2025-04-13 19:38:54,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:38:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:38:54,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:38:54,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:38:54,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:38:54,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:54,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:38:54,440 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899717520] [2025-04-13 19:38:54,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899717520] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:38:54,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:38:54,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:38:54,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506543538] [2025-04-13 19:38:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:38:54,441 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:38:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:38:54,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:38:54,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:38:54,442 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 76 [2025-04-13 19:38:54,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 57 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:54,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:38:54,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 76 [2025-04-13 19:38:54,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:38:54,740 INFO L116 PetriNetUnfolderBase]: 453/719 cut-off events. [2025-04-13 19:38:54,740 INFO L117 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-04-13 19:38:54,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 719 events. 453/719 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2506 event pairs, 40 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 1427. Up to 363 conditions per place. [2025-04-13 19:38:54,746 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 77 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-04-13 19:38:54,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 328 flow [2025-04-13 19:38:54,747 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:38:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:38:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-04-13 19:38:54,749 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3059210526315789 [2025-04-13 19:38:54,749 INFO L175 Difference]: Start difference. First operand has 43 places, 57 transitions, 118 flow. Second operand 4 states and 93 transitions. [2025-04-13 19:38:54,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 328 flow [2025-04-13 19:38:54,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:38:54,751 INFO L231 Difference]: Finished difference. Result has 46 places, 58 transitions, 132 flow [2025-04-13 19:38:54,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=58} [2025-04-13 19:38:54,752 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2025-04-13 19:38:54,752 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 58 transitions, 132 flow [2025-04-13 19:38:54,752 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:54,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:38:54,752 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:38:54,753 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:38:54,753 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:38:54,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:38:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 540385384, now seen corresponding path program 1 times [2025-04-13 19:38:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:38:54,753 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381305429] [2025-04-13 19:38:54,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:38:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:38:54,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:38:54,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:38:54,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:38:54,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:38:55,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381305429] [2025-04-13 19:38:55,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381305429] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:38:55,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:38:55,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:38:55,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042622843] [2025-04-13 19:38:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:38:55,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:38:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:38:55,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:38:55,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:38:55,113 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 76 [2025-04-13 19:38:55,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 58 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:38:55,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 76 [2025-04-13 19:38:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:38:55,322 INFO L116 PetriNetUnfolderBase]: 453/718 cut-off events. [2025-04-13 19:38:55,322 INFO L117 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-04-13 19:38:55,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 718 events. 453/718 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2472 event pairs, 278 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 1493. Up to 698 conditions per place. [2025-04-13 19:38:55,326 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 56 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2025-04-13 19:38:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 250 flow [2025-04-13 19:38:55,327 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:38:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:38:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-04-13 19:38:55,328 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2982456140350877 [2025-04-13 19:38:55,328 INFO L175 Difference]: Start difference. First operand has 46 places, 58 transitions, 132 flow. Second operand 3 states and 68 transitions. [2025-04-13 19:38:55,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 250 flow [2025-04-13 19:38:55,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:38:55,331 INFO L231 Difference]: Finished difference. Result has 47 places, 59 transitions, 142 flow [2025-04-13 19:38:55,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=59} [2025-04-13 19:38:55,331 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2025-04-13 19:38:55,331 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 59 transitions, 142 flow [2025-04-13 19:38:55,332 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:55,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:38:55,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:38:55,332 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:38:55,332 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:38:55,332 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:38:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1332876159, now seen corresponding path program 1 times [2025-04-13 19:38:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:38:55,332 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216129016] [2025-04-13 19:38:55,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:38:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:38:55,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 19:38:55,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 19:38:55,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:38:55,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:55,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:38:55,677 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216129016] [2025-04-13 19:38:55,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216129016] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:38:55,677 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559564049] [2025-04-13 19:38:55,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:38:55,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:38:55,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:38:55,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:38:55,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 19:38:55,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 19:38:56,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 19:38:56,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:38:56,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:56,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 19:38:56,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:38:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:56,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:38:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:38:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559564049] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:38:56,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:38:56,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-04-13 19:38:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903464655] [2025-04-13 19:38:56,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:38:56,282 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 19:38:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:38:56,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 19:38:56,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 19:38:56,282 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 76 [2025-04-13 19:38:56,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 59 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:56,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:38:56,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 76 [2025-04-13 19:38:56,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:38:56,644 INFO L116 PetriNetUnfolderBase]: 453/723 cut-off events. [2025-04-13 19:38:56,644 INFO L117 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-04-13 19:38:56,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 723 events. 453/723 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2508 event pairs, 278 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 1490. Up to 698 conditions per place. [2025-04-13 19:38:56,648 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 55 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2025-04-13 19:38:56,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 284 flow [2025-04-13 19:38:56,649 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:38:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:38:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2025-04-13 19:38:56,650 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.19736842105263158 [2025-04-13 19:38:56,650 INFO L175 Difference]: Start difference. First operand has 47 places, 59 transitions, 142 flow. Second operand 6 states and 90 transitions. [2025-04-13 19:38:56,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 284 flow [2025-04-13 19:38:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 280 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-13 19:38:56,653 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 204 flow [2025-04-13 19:38:56,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2025-04-13 19:38:56,653 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2025-04-13 19:38:56,653 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 204 flow [2025-04-13 19:38:56,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:56,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:38:56,653 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:38:56,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 19:38:56,854 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:38:56,854 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:38:56,855 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:38:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1712038232, now seen corresponding path program 2 times [2025-04-13 19:38:56,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:38:56,855 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731827082] [2025-04-13 19:38:56,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:38:56,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:38:56,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 19:38:56,955 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 18 statements. [2025-04-13 19:38:56,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:38:56,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:38:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 19:38:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:38:57,231 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731827082] [2025-04-13 19:38:57,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731827082] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:38:57,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:38:57,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:38:57,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199545569] [2025-04-13 19:38:57,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:38:57,231 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:38:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:38:57,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:38:57,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:38:57,233 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 76 [2025-04-13 19:38:57,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:57,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:38:57,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 76 [2025-04-13 19:38:57,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:38:57,445 INFO L116 PetriNetUnfolderBase]: 437/698 cut-off events. [2025-04-13 19:38:57,445 INFO L117 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-04-13 19:38:57,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 698 events. 437/698 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2437 event pairs, 54 based on Foata normal form. 11/582 useless extension candidates. Maximal degree in co-relation 1461. Up to 504 conditions per place. [2025-04-13 19:38:57,448 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2025-04-13 19:38:57,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 355 flow [2025-04-13 19:38:57,448 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:38:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:38:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-04-13 19:38:57,450 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3157894736842105 [2025-04-13 19:38:57,450 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 204 flow. Second operand 3 states and 72 transitions. [2025-04-13 19:38:57,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 355 flow [2025-04-13 19:38:57,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 345 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-04-13 19:38:57,453 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2025-04-13 19:38:57,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2025-04-13 19:38:57,453 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2025-04-13 19:38:57,453 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2025-04-13 19:38:57,453 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-04-13 19:38:57,456 INFO L790 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-13 19:38:57,457 INFO L790 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 19:38:57,457 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:38:57,457 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-04-13 19:38:57,460 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:38:57,460 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:38:57,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:38:57 BasicIcfg [2025-04-13 19:38:57,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:38:57,465 INFO L158 Benchmark]: Toolchain (without parser) took 12077.73ms. Allocated memory was 155.2MB in the beginning and 650.1MB in the end (delta: 494.9MB). Free memory was 99.6MB in the beginning and 323.4MB in the end (delta: -223.8MB). Peak memory consumption was 270.9MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,465 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:38:57,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4593.58ms. Allocated memory was 155.2MB in the beginning and 159.4MB in the end (delta: 4.2MB). Free memory was 99.3MB in the beginning and 85.5MB in the end (delta: 13.8MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.37ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 72.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,466 INFO L158 Benchmark]: Boogie Preprocessor took 113.32ms. Allocated memory is still 159.4MB. Free memory was 72.9MB in the beginning and 62.6MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,468 INFO L158 Benchmark]: RCFGBuilder took 2614.14ms. Allocated memory was 159.4MB in the beginning and 352.3MB in the end (delta: 192.9MB). Free memory was 62.6MB in the beginning and 122.0MB in the end (delta: -59.4MB). Peak memory consumption was 206.0MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,469 INFO L158 Benchmark]: TraceAbstraction took 4620.79ms. Allocated memory was 352.3MB in the beginning and 650.1MB in the end (delta: 297.8MB). Free memory was 122.0MB in the beginning and 323.4MB in the end (delta: -201.4MB). Peak memory consumption was 98.5MB. Max. memory is 8.0GB. [2025-04-13 19:38:57,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 4593.58ms. Allocated memory was 155.2MB in the beginning and 159.4MB in the end (delta: 4.2MB). Free memory was 99.3MB in the beginning and 85.5MB in the end (delta: 13.8MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 130.37ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 72.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 113.32ms. Allocated memory is still 159.4MB. Free memory was 72.9MB in the beginning and 62.6MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 2614.14ms. Allocated memory was 159.4MB in the beginning and 352.3MB in the end (delta: 192.9MB). Free memory was 62.6MB in the beginning and 122.0MB in the end (delta: -59.4MB). Peak memory consumption was 206.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4620.79ms. Allocated memory was 352.3MB in the beginning and 650.1MB in the end (delta: 297.8MB). Free memory was 122.0MB in the beginning and 323.4MB in the end (delta: -201.4MB). Peak memory consumption was 98.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 5817]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 175]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 175]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 69 locations, 112 edges, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 672 IncrementalHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 672 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 79 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 1 NumberOfNonLiveVariables, 682 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:38:57,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...